111200121212 has 6 divisors (see below), whose sum is σ = 194600212128. Its totient is φ = 55600060604.

The previous prime is 111200121211. The next prime is 111200121281. The reversal of 111200121212 is 212121002111.

111200121212 is a modest number, since divided by 121212 gives 111200 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200121211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900015148 + ... + 13900015155.

It is an arithmetic number, because the mean of its divisors is an integer number (32433368688).

Almost surely, 2^111200121212 is an apocalyptic number.

It is an amenable number.

111200121212 is a deficient number, since it is larger than the sum of its proper divisors (83400090916).

111200121212 is a wasteful number, since it uses less digits than its factorization.

111200121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27800030307 (or 27800030305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111200121212 its reverse (212121002111), we get a palindrome (323321123323).

The spelling of 111200121212 in words is "one hundred eleven billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".